Effect of cathode shape on vertical buffered electropolishing for niobium SRF cavities
文献类型：期刊论文
| 作者 | Jin, S; Wu, AT; Lu, XY; Rimmer, RA; Lin, L; Zhao, K; Mammosser, J; Gao, J; Gao J(高杰)
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| 刊名 | APPLIED SURFACE SCIENCE
 |
| 出版日期 | 2013 |
| 卷号 | 280页码:93-103 |
| 关键词 | Niobium SRF cavities Buffered electropolishing Electropolishing I-V characteristics |
| 英文摘要 | This paper reports the research results of the effect of cathode shape during vertical buffered electropolishing (BEP) by employing a demountable single cell niobium (Nb) superconducting radio frequency (SRF) cavity. Several different cathode shapes such as, for instance, bar, ball, ellipsoid, and wheels of different diameters have been tested. Detailed electropolishing parameters including I-V characteristic, removal rate, surface roughness, and polishing uniformity at different locations inside the demountable cavity are measured. Similar studies are also done on conventional electropolishing (EP) for comparison. It is revealed that cathode shape has dominant effects for BEP especially on the obtaining of a suitable polishing condition and a uniform polishing rate in an Nb SRF single cell cavity. EP appears to have the same tendency. This paper demonstrates that a more homogeneous polishing result can be obtained by optimizing the electric field distribution inside the cavity through the modification of the cathode shape given the conditions that temperature and electrolyte flow are kept constant. Electric field distribution and electrolyte flow patterns inside the cavity are simulated via Poisson-Superfish and Solidworks respectively. With the optimal cathode shape, BEP shows a much faster polishing rate of similar to 2.5 mu m/min and is able to produce a smoother surface finish in the treatments of single cell cavities in comparison with EP. |
| 学科主题 | Chemistry; Materials Science; Physics |
| 收录类别 | SCI |
| WOS记录号 | WOS:000321045700014 |
| 公开日期 | 2016-05-03 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/223835]  |
| 专题 | 高能物理研究所_加速器中心 |
| 推荐引用方式 GB/T 7714 | Jin, S,Wu, AT,Lu, XY,et al. Effect of cathode shape on vertical buffered electropolishing for niobium SRF cavities[J]. APPLIED SURFACE SCIENCE,2013,280:93-103. |
| APA | Jin, S.,Wu, AT.,Lu, XY.,Rimmer, RA.,Lin, L.,...&高杰.(2013).Effect of cathode shape on vertical buffered electropolishing for niobium SRF cavities.APPLIED SURFACE SCIENCE,280,93-103. |
| MLA | Jin, S,et al."Effect of cathode shape on vertical buffered electropolishing for niobium SRF cavities".APPLIED SURFACE SCIENCE 280(2013):93-103. |
入库方式： OAI收割
来源：高能物理研究所
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